Please help with this problem!!!

Answer:
The common factor is 2b
Step-by-step explanation:
By factorization, we can determine the common factor by finding a number or variable which when multiplied by other numbers maintains a specific pattern.
For the question above, when 2b is multiplied by 4b² we arrive at 8b². Similarly when 2b is multiplied by 5 we have 10b, hence 2b is the common factor of both 8b³ and 10b.
[tex]2b \times 5 = 10b \\ 2b \times {4b}^{2} = 8 {b}^{3} [/tex]